"What was your name before you changed it?"
I've also gotten the "so which bathroom do you use?"
"so, when are you going to transition?"
"how do you know you're really transgender and not just gay or a lesbian? It sounds to me like this is just because you're parents set standards for what a 'guy' and 'girl' should be."
Yeah, these have all been said to me at some point this past semester.